Masuku One - Black Smooth - Face Mask


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The first revolutionary sustainable face mask from Masuku. A breakthrough in breathable, comfortable, high performance air filtration, with a sustainable design that fulfils Masuku’s vision to provide clean air while protecting the planet. Masuku One - Black Smooth, features three layers that gently come together to deliver enhanced filtration. Masuku One... Read full product details

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The first revolutionary sustainable face mask from Masuku. A breakthrough in breathable, comfortable, high performance air filtration, with a sustainable design that fulfils Masuku’s vision to provide clean air while protecting the planet. Masuku One - Black Smooth, features three layers that gently come together to deliver enhanced filtration.

Masuku One Specification

  • The first revolutionary sustainable face mask from Masuku.
  • Provides a powerful and efficient filtration system, which means it takes less effort to get the air through the filter than any other face masks.
  • The 3 layer filter is made from 100% bio based and biodegradable materials.
  • The minimal quantity of material required results in a more breathable mesh.
  • Our face masks offer a truly safe and comfortable breathing experience, with no impact on the planet.

Key Features

  • Strong filtration of pathogens including viruses.
  • No detachable micro and nanoparticles deposited, meaning filtration doesn’t wear off as it does in other face masks.
  • Soft textured, smooth materials for skin contact, without stitched seams.
  • Re-recyclable components.
  • Replaceable filters are biodegradable under natural conditions.
  • Replacement filter subscription model offers cost effective option.
  • Certified under BSI Flex 5555.

The future of filtration
The uniquely advanced Masuku filtration system is bio-based and delivers over 94% filtration efficiency, equivalent to FFP2 standards. Hidden once the face mask is assembled and worn, the filter connects to the protective frame, serving as the central cog in the filtration system.

Soft skeleton, lightweight protection
Masuku One’s internal structure comes from a lightweight frame which sits beneath a soft case. This allows for filtered air to circulate comfortably.

Personalised comfort
Adjustable earloops gently hold the face mask to the face, enabling the highly breathable, super lightweight Masuku One face mask to work with a personalised fit.

Sizing guide

masuku one size guide

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Masuku One

What sizes is Masuku One offered in?

The Masuku One is currently available in two different sizes, small and medium. Please refer to our Masuku One Size Guide.

Does size S fit children?

Yes, the small fits children above 10 years old

How do I know what size I am and how do I measure my face?

Please refer to the sizing chart on the product page.

How is the filter made?

Masuku’s patented nano-fibre filtration material is created from a newly developed electrospinning process involving an engineered compostable polymer. Compared with melt-blown fibres or simple fabrics, which are used to make the vast majority of face masks currently available, the electrospinning process is able to create a highly uniform membrane consisting of extremely fine fibres (up to 1,000x narrower than a human hair) dispersed with extreme precision for maximum material efficiency.

What can it filter?

The filtration membrane provides strong protection from dangerous particles in the air, including pathogens, allergens and pollutants. This is all made possible through a combination of manufacturing processes and bio-based filtration technologies that Masuku has developed. We designed filters to fight the smallest particles out there, such as viruses. While we were able to test it only down to 300nm particle sizes, we achieved filtration efficiencies as high as 99.95%.It also means, we are able to filter urban air pollution, pollen, bacteria, and fibres by any product. Smells have different mechanics and sizes when they travel in the air, and you will still smell any odour, it applies to any product out there.The replaceable filter inside a Masuku One mask is optimised to a similar level of FFP2 standard, meaning it has a filtration efficiency of over 94%.

How often should I swap out the filters?

To ensure optimum performance of your Masuku One, change the filter regularly. Over time, the filter will become saturated and start to lose function. Each Masuku One comes with 3 filters, plus one already installed. We expect the average user to require 10 filters each month.

How should the filters be responsibly disposed of after use?

The key technology of the Masuku mask is its biodegradable filter layer. We have worked hard to develop a materials solution to overcome the issue holding back conventional melt blown polyester filters.Our solution is to use a bio-based polymer mesh using PHB. This filter layer is deposited onto a viscose substrate. This means that both the filter and the mask material can be disposed of as compostable waste. We are undertaking a number of certification test programmes relating to biodegradability/compostability and once in place will allow us to recommend that the filters are home composted as the most responsible means of disposal.

Has this been tested in contact with skin? Is it dermatologically safe?

Yes, all textile components have been tested for hazardous dyes and auxiliaries. The guard material, which is the main point of contact with the skin, is OEKO-TEX® certified.

How should it be washed and cared for?

Under everyday circumstances in typical urban environments, we recommend using gentle hand wash.

1. Use mild gel detergent or hand soap and warm water to create a lather.

2. Gently rub the cover and earloops for a minute, then rinse under running water until all suds are removed.

3. Allow to dry at room temperature laid flat.

Never bleach, tumble dry, dry clean or iron.

The frame can be handled the same way, or using an alcohol based wipe.

The latest government or medical advice should always take precedence.

Where is best to dispose of a Masuku One?

Firstly, separate the components. The frame is made from 100% HDPE and is marked with the HDPE recycling logo. It can be placed in a recycling bin, along with the outer fabric which is 100% PET, as marked by the label. The filters are made from a biodegradable polymer and are designed to be compostable (certification pending).

How do you store the mask when you aren’t using it?

It’s important to store your mask in a cool, dry place between usage. Ensure the mask is protected from any potentially contaminated surfaces.

How long should I expect my reusable mask to last for?

If well cared for this product should last anywhere up to several years. As we designed the components to be modular, you can refresh individual parts as needed.

What materials are used?

COVER: Outer 100% recycled polyester, guard 100% polyester

FRAME: HDPE TRIMS (A-ring/adjuster): POM

EARLOOPS: 79% recycled polyester, 21% recycled elastane

FILTER: Viscose substrate/PHB membrane.

Where do the materials come from?

All parts are currently manufactured in China, where the majority of products are made. The outer cover fabric is from UK for launch batches, but we have resourced alternatives locally to Chinese factories. Filter material is currently manufactured in Germany/Czech Republic but will be manufactured in the UK. We are looking for ways to reduce carbon footprint and source more locally in Europe.

Why are you using plastics?

Plastic is a high performance material, is easy to disinfect and is cost effective. It has a smaller environmental impact in comparison to most textile fibre types.

Delivery Information

Do you deliver to the US?

Yes, we're based in the UK, but offer worldwide shipping. Please see our Shipping page for further details.


How long does delivery the the EU take?

Shipping to the EU tends to be around 3-7 working days after the order has been dispatched. Please see our shipping page for full information.

How do I find my tracking number?

By providing your email and mobile phone number, we can ensure that any tracking information is provided to you directly from our courier partners. If you haven't received any tracking information then please contact us for assistance.

Are deliveries delayed due to COVID-19?

At the current time we're operating at full capacity with no delays with dispatch. Delivery may be delayed due to specific regulations in each country, please seek advise from local governments if you have specific concerns or enquiries.

Return Information

What is your return policy?

Our return policy can be viewed here.

I've changed my mind, can I return it?

Due to Health & Safety reasons we can only accept returns on products that are in the original unopened packaging.

Something not right with my product, what can I do?

In the unlikely event that your Masuku product develops a fault, then please contact us for assistance.

We’d love to hear from you.

Have questions, requests or concerns? Please email us at;

If you'd like to place an order for your business, please contact us at, including details of your business with VAT, and your estimated unit requirement. We'll follow up with the best way for you to order.

Masuku Filtration Limited
The AirLab
Unit 1 Eden Close
Hellaby Industrial Estate
S66 8RW

More than 90% of the world’s population breathes air with levels of pollutants that exceed limits set by the World Health Organisation.

Despite this fundamental human need for clean air, the face mask industry has failed to deliver an adequate solution.

We are forced to trade-off between filtration efficiency, comfort and style, whilst a genuinely sustainable choice is completely lacking.

This insight led to the creation of Masuku more than four years ago.

The vast majority of face masks currently used cannot be recycled - many end up being incinerated, which further worsens the air quality crisis.

Furthermore, increasing numbers are littered, washing up on beaches and polluting natural environments where they will persist for an estimated 450 years.

Masuku’s vision is to provide clean air without compromising on comfort, style, or sustainability - to provide powerful filtration performance, whilst protecting the planet.

This led Masuku to partner with Pentatonic, a design and technology company that specialises in what is known as the circular economy, to develop groundbreaking manufacturing technologies that will power the world’s most advanced face mask, Masuku One

The core of Masuku’s unique technology is a new kind of nano-fibre filtration material created from an engineered compostable polymer, using a newly developed electrospinning process. Compared with meltblown fibres, which are used to make the majority of face masks currently available, the electrospinning process is able to create a structured membrane consisting of extremely fine nano-fibres (up to 1,000 times narrower than a human hair) dispersed with extreme precision for maximum efficiency.

Masuku’s revolutionary nano-fibre filtration material is being produced on site at the company’s AirLab in Hellaby, Rotherham. Assembly of Masuku One and production of Masuku Daily products will also take place in the north of England. A centre of excellence for sustainable filtration technology, the facility is responsible for producing Masuku’s proprietary nanofiber filtration fabric and assembling face masks under highly controlled conditions. In addition to this a substantial investment has been committed to ongoing research and development, Masuku will partner with globally renowned institutions and organisations to develop future generations of high-tech sustainable filtration devices.

Taking its name from the Japanese for ‘mask’, a culture where masks are taken as a sign of care and respect for the community’s health, it has been Masuku’s mission since day one to create a fully sustainable product. That’s why Masuku face masks are made using recycled materials that can be re-recycled when it’s time to dispose of them. What’s more, the replaceable filters are bio-based, allowing for easy, environmentally-friendly disposal.

Welcome to the future of clean air.

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